#ifndef crypto_box_H
#define crypto_box_H

/*
 * THREAD SAFETY: crypto_box_keypair() is thread-safe,
 * provided that sodium_init() was called before.
 *
 * Other functions are always thread-safe.
 */

#include <stddef.h>

#include "crypto_box_curve25519xsalsa20poly1305.h"
#include "export.h"

#ifdef __cplusplus
#ifdef __GNUC__
#pragma GCC diagnostic ignored "-Wlong-long"
#endif
extern "C"
{
#endif

#define crypto_box_SEEDBYTES crypto_box_curve25519xsalsa20poly1305_SEEDBYTES
  SODIUM_EXPORT
  size_t
  crypto_box_seedbytes(void);

#define crypto_box_PUBLICKEYBYTES \
  crypto_box_curve25519xsalsa20poly1305_PUBLICKEYBYTES
  SODIUM_EXPORT
  size_t
  crypto_box_publickeybytes(void);

#define crypto_box_SECRETKEYBYTES \
  crypto_box_curve25519xsalsa20poly1305_SECRETKEYBYTES
  SODIUM_EXPORT
  size_t
  crypto_box_secretkeybytes(void);

#define crypto_box_NONCEBYTES crypto_box_curve25519xsalsa20poly1305_NONCEBYTES
  SODIUM_EXPORT
  size_t
  crypto_box_noncebytes(void);

#define crypto_box_MACBYTES crypto_box_curve25519xsalsa20poly1305_MACBYTES
  SODIUM_EXPORT
  size_t
  crypto_box_macbytes(void);

#define crypto_box_MESSAGEBYTES_MAX \
  crypto_box_curve25519xsalsa20poly1305_MESSAGEBYTES_MAX
  SODIUM_EXPORT
  size_t
  crypto_box_messagebytes_max(void);

#define crypto_box_PRIMITIVE "curve25519xsalsa20poly1305"
  SODIUM_EXPORT
  const char *
  crypto_box_primitive(void);

  SODIUM_EXPORT
  int
  crypto_box_seed_keypair(unsigned char *pk, unsigned char *sk,
                          const unsigned char *seed);

  SODIUM_EXPORT
  int
  crypto_box_keypair(unsigned char *pk, unsigned char *sk);

  SODIUM_EXPORT
  int
  crypto_box_easy(unsigned char *c, const unsigned char *m,
                  unsigned long long mlen, const unsigned char *n,
                  const unsigned char *pk, const unsigned char *sk)
      __attribute__((warn_unused_result));

  SODIUM_EXPORT
  int
  crypto_box_open_easy(unsigned char *m, const unsigned char *c,
                       unsigned long long clen, const unsigned char *n,
                       const unsigned char *pk, const unsigned char *sk)
      __attribute__((warn_unused_result));

  SODIUM_EXPORT
  int
  crypto_box_detached(unsigned char *c, unsigned char *mac,
                      const unsigned char *m, unsigned long long mlen,
                      const unsigned char *n, const unsigned char *pk,
                      const unsigned char *sk)
      __attribute__((warn_unused_result));

  SODIUM_EXPORT
  int
  crypto_box_open_detached(unsigned char *m, const unsigned char *c,
                           const unsigned char *mac, unsigned long long clen,
                           const unsigned char *n, const unsigned char *pk,
                           const unsigned char *sk)
      __attribute__((warn_unused_result));

  /* -- Precomputation interface -- */

#define crypto_box_BEFORENMBYTES \
  crypto_box_curve25519xsalsa20poly1305_BEFORENMBYTES
  SODIUM_EXPORT
  size_t
  crypto_box_beforenmbytes(void);

  SODIUM_EXPORT
  int
  crypto_box_beforenm(unsigned char *k, const unsigned char *pk,
                      const unsigned char *sk)
      __attribute__((warn_unused_result));

  SODIUM_EXPORT
  int
  crypto_box_easy_afternm(unsigned char *c, const unsigned char *m,
                          unsigned long long mlen, const unsigned char *n,
                          const unsigned char *k);

  SODIUM_EXPORT
  int
  crypto_box_open_easy_afternm(unsigned char *m, const unsigned char *c,
                               unsigned long long clen, const unsigned char *n,
                               const unsigned char *k)
      __attribute__((warn_unused_result));

  SODIUM_EXPORT
  int
  crypto_box_detached_afternm(unsigned char *c, unsigned char *mac,
                              const unsigned char *m, unsigned long long mlen,
                              const unsigned char *n, const unsigned char *k);

  SODIUM_EXPORT
  int
  crypto_box_open_detached_afternm(unsigned char *m, const unsigned char *c,
                                   const unsigned char *mac,
                                   unsigned long long clen,
                                   const unsigned char *n,
                                   const unsigned char *k)
      __attribute__((warn_unused_result));

  /* -- Ephemeral SK interface -- */

#define crypto_box_SEALBYTES (crypto_box_PUBLICKEYBYTES + crypto_box_MACBYTES)
  SODIUM_EXPORT
  size_t
  crypto_box_sealbytes(void);

  SODIUM_EXPORT
  int
  crypto_box_seal(unsigned char *c, const unsigned char *m,
                  unsigned long long mlen, const unsigned char *pk);

  SODIUM_EXPORT
  int
  crypto_box_seal_open(unsigned char *m, const unsigned char *c,
                       unsigned long long clen, const unsigned char *pk,
                       const unsigned char *sk)
      __attribute__((warn_unused_result));

  /* -- NaCl compatibility interface ; Requires padding -- */

#define crypto_box_ZEROBYTES crypto_box_curve25519xsalsa20poly1305_ZEROBYTES
  SODIUM_EXPORT
  size_t
  crypto_box_zerobytes(void);

#define crypto_box_BOXZEROBYTES \
  crypto_box_curve25519xsalsa20poly1305_BOXZEROBYTES
  SODIUM_EXPORT
  size_t
  crypto_box_boxzerobytes(void);

  SODIUM_EXPORT
  int
  crypto_box(unsigned char *c, const unsigned char *m, unsigned long long mlen,
             const unsigned char *n, const unsigned char *pk,
             const unsigned char *sk) __attribute__((warn_unused_result));

  SODIUM_EXPORT
  int
  crypto_box_open(unsigned char *m, const unsigned char *c,
                  unsigned long long clen, const unsigned char *n,
                  const unsigned char *pk, const unsigned char *sk)
      __attribute__((warn_unused_result));

  SODIUM_EXPORT
  int
  crypto_box_afternm(unsigned char *c, const unsigned char *m,
                     unsigned long long mlen, const unsigned char *n,
                     const unsigned char *k);

  SODIUM_EXPORT
  int
  crypto_box_open_afternm(unsigned char *m, const unsigned char *c,
                          unsigned long long clen, const unsigned char *n,
                          const unsigned char *k)
      __attribute__((warn_unused_result));

#ifdef __cplusplus
}
#endif

#endif
